Hiromasa Mizushima

President at SIMPLEX FINANCIAL HOLDINGS CO., LTD.

Net worth: 38 M $ as of 2026-07-30

71 year

Finance

Miscellaneous

Profile

Hiromasa Mizushima currently works at Simplex Asset Management Co., Ltd., as President & Chief Executive Officer from 2006, Simplex Capital Investment Co. Ltd., as President and CEO, Simplex Financial Holdings Co., Ltd., as President & Representative Director from 2006, and Simplex Global Investments Ltd., as Director.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
SIMPLEX FINANCIAL HOLDINGS CO., LTD. 30.25%	2026-07-29	8,204,000 ( 30.25% )	38 M $	2026-07-30

Hiromasa Mizushima active positions

Companies	Position	Start
SIMPLEX FINANCIAL HOLDINGS CO., LTD.	President	2006-10-05
Simplex Asset Management Co., Ltd. Simplex Asset Management Co., Ltd. Investment ManagersFinance SAM is an active, quantitative manager which seeks to provide superior returns to their clients. The firm invests globally across asset classes, with a strong focus on Japanese equity and fixed-income.	Chief Executive Officer	2006-10-05
Simplex Global Investments Ltd. Simplex Global Investments Ltd. Investment ManagersFinance Provides investment advice	Director/Board Member	-
Simplex Capital Investment Co. Ltd. Simplex Capital Investment Co. Ltd. Investment ManagersFinance Simplex Capital invests on companies located in Japan. The firm focuses on a broad range of sectors and industries. It participates in growth transactions.	Chief Executive Officer	-

All active positions of Hiromasa Mizushima

Experiences
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Linked companies

Private companies	4
Simplex Asset Management Co., Ltd. Simplex Asset Management Co., Ltd. Investment ManagersFinance SAM is an active, quantitative manager which seeks to provide superior returns to their clients. The firm invests globally across asset classes, with a strong focus on Japanese equity and fixed-income.	Finance
Simplex Financial Holdings Co., Ltd. Simplex Financial Holdings Co., Ltd. Investment Trusts/Mutual FundsMiscellaneous Engages in the investment management and advisory services	Miscellaneous
Simplex Global Investments Ltd. Simplex Global Investments Ltd. Investment ManagersFinance Provides investment advice	Finance
Simplex Capital Investment Co. Ltd. Simplex Capital Investment Co. Ltd. Investment ManagersFinance Simplex Capital invests on companies located in Japan. The firm focuses on a broad range of sectors and industries. It participates in growth transactions.	Finance